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<pre><span class="sourceLineNo">001</span>/*<a name="line.1"></a>
<span class="sourceLineNo">002</span> * Cobertura - http://cobertura.sourceforge.net/<a name="line.2"></a>
<span class="sourceLineNo">003</span> *<a name="line.3"></a>
<span class="sourceLineNo">004</span> * Copyright (C) 2005 Grzegorz Lukasik<a name="line.4"></a>
<span class="sourceLineNo">005</span> * Copyright (C) 2006 John Lewis<a name="line.5"></a>
<span class="sourceLineNo">006</span> * Copyright (C) 2007 Ignat Zapolsky<a name="line.6"></a>
<span class="sourceLineNo">007</span> *<a name="line.7"></a>
<span class="sourceLineNo">008</span> * Note: This file is dual licensed under the GPL and the Apache<a name="line.8"></a>
<span class="sourceLineNo">009</span> * Source License (so that it can be used from both the main<a name="line.9"></a>
<span class="sourceLineNo">010</span> * Cobertura classes and the ant tasks).<a name="line.10"></a>
<span class="sourceLineNo">011</span> *<a name="line.11"></a>
<span class="sourceLineNo">012</span> * Cobertura is free software; you can redistribute it and/or modify<a name="line.12"></a>
<span class="sourceLineNo">013</span> * it under the terms of the GNU General Public License as published<a name="line.13"></a>
<span class="sourceLineNo">014</span> * by the Free Software Foundation; either version 2 of the License,<a name="line.14"></a>
<span class="sourceLineNo">015</span> * or (at your option) any later version.<a name="line.15"></a>
<span class="sourceLineNo">016</span> *<a name="line.16"></a>
<span class="sourceLineNo">017</span> * Cobertura is distributed in the hope that it will be useful, but<a name="line.17"></a>
<span class="sourceLineNo">018</span> * WITHOUT ANY WARRANTY; without even the implied warranty of<a name="line.18"></a>
<span class="sourceLineNo">019</span> * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU<a name="line.19"></a>
<span class="sourceLineNo">020</span> * General Public License for more details.<a name="line.20"></a>
<span class="sourceLineNo">021</span> *<a name="line.21"></a>
<span class="sourceLineNo">022</span> * You should have received a copy of the GNU General Public License<a name="line.22"></a>
<span class="sourceLineNo">023</span> * along with Cobertura; if not, write to the Free Software<a name="line.23"></a>
<span class="sourceLineNo">024</span> * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307<a name="line.24"></a>
<span class="sourceLineNo">025</span> * USA<a name="line.25"></a>
<span class="sourceLineNo">026</span> */<a name="line.26"></a>
<span class="sourceLineNo">027</span><a name="line.27"></a>
<span class="sourceLineNo">028</span>package net.sourceforge.cobertura.util;<a name="line.28"></a>
<span class="sourceLineNo">029</span><a name="line.29"></a>
<span class="sourceLineNo">030</span>import java.io.BufferedWriter;<a name="line.30"></a>
<span class="sourceLineNo">031</span>import java.io.ByteArrayOutputStream;<a name="line.31"></a>
<span class="sourceLineNo">032</span>import java.io.File;<a name="line.32"></a>
<span class="sourceLineNo">033</span>import java.io.FileInputStream;<a name="line.33"></a>
<span class="sourceLineNo">034</span>import java.io.FileNotFoundException;<a name="line.34"></a>
<span class="sourceLineNo">035</span>import java.io.FileOutputStream;<a name="line.35"></a>
<span class="sourceLineNo">036</span>import java.io.IOException;<a name="line.36"></a>
<span class="sourceLineNo">037</span>import java.io.InputStream;<a name="line.37"></a>
<span class="sourceLineNo">038</span>import java.io.OutputStream;<a name="line.38"></a>
<span class="sourceLineNo">039</span>import java.io.OutputStreamWriter;<a name="line.39"></a>
<span class="sourceLineNo">040</span>import java.io.PrintWriter;<a name="line.40"></a>
<span class="sourceLineNo">041</span>import java.io.UnsupportedEncodingException;<a name="line.41"></a>
<span class="sourceLineNo">042</span>import java.io.Writer;<a name="line.42"></a>
<span class="sourceLineNo">043</span><a name="line.43"></a>
<span class="sourceLineNo">044</span>/**<a name="line.44"></a>
<span class="sourceLineNo">045</span> * Helper class with useful I/O operations.<a name="line.45"></a>
<span class="sourceLineNo">046</span> * <a name="line.46"></a>
<span class="sourceLineNo">047</span> * @author Grzegorz Lukasik<a name="line.47"></a>
<span class="sourceLineNo">048</span> */<a name="line.48"></a>
<span class="sourceLineNo">049</span>public abstract class IOUtil<a name="line.49"></a>
<span class="sourceLineNo">050</span>{<a name="line.50"></a>
<span class="sourceLineNo">051</span><a name="line.51"></a>
<span class="sourceLineNo">052</span> /**<a name="line.52"></a>
<span class="sourceLineNo">053</span> * Copies bytes from input stream into the output stream. Stops<a name="line.53"></a>
<span class="sourceLineNo">054</span> * when the input stream read method returns -1. Does not close<a name="line.54"></a>
<span class="sourceLineNo">055</span> * the streams.<a name="line.55"></a>
<span class="sourceLineNo">056</span> * <a name="line.56"></a>
<span class="sourceLineNo">057</span> * @throws IOException If either passed stream will throw IOException.<a name="line.57"></a>
<span class="sourceLineNo">058</span> * @throws NullPointerException If either passed stream is null.<a name="line.58"></a>
<span class="sourceLineNo">059</span> */<a name="line.59"></a>
<span class="sourceLineNo">060</span> public static void copyStream(InputStream in, OutputStream out)<a name="line.60"></a>
<span class="sourceLineNo">061</span> throws IOException<a name="line.61"></a>
<span class="sourceLineNo">062</span> {<a name="line.62"></a>
<span class="sourceLineNo">063</span> // NullPointerException is explicity thrown to guarantee expected behaviour<a name="line.63"></a>
<span class="sourceLineNo">064</span> if (in == null || out == null)<a name="line.64"></a>
<span class="sourceLineNo">065</span> throw new NullPointerException();<a name="line.65"></a>
<span class="sourceLineNo">066</span><a name="line.66"></a>
<span class="sourceLineNo">067</span> int el;<a name="line.67"></a>
<span class="sourceLineNo">068</span> byte[] buffer = new byte[1 << 15];<a name="line.68"></a>
<span class="sourceLineNo">069</span> while ((el = in.read(buffer)) != -1)<a name="line.69"></a>
<span class="sourceLineNo">070</span> {<a name="line.70"></a>
<span class="sourceLineNo">071</span> out.write(buffer, 0, el);<a name="line.71"></a>
<span class="sourceLineNo">072</span> }<a name="line.72"></a>
<span class="sourceLineNo">073</span> }<a name="line.73"></a>
<span class="sourceLineNo">074</span><a name="line.74"></a>
<span class="sourceLineNo">075</span> /**<a name="line.75"></a>
<span class="sourceLineNo">076</span> * Returns an array that contains values read from the<a name="line.76"></a>
<span class="sourceLineNo">077</span> * given input stream.<a name="line.77"></a>
<span class="sourceLineNo">078</span> * <a name="line.78"></a>
<span class="sourceLineNo">079</span> * @throws NullPointerException If null stream is passed.<a name="line.79"></a>
<span class="sourceLineNo">080</span> */<a name="line.80"></a>
<span class="sourceLineNo">081</span> public static byte[] createByteArrayFromInputStream(InputStream in)<a name="line.81"></a>
<span class="sourceLineNo">082</span> throws IOException<a name="line.82"></a>
<span class="sourceLineNo">083</span> {<a name="line.83"></a>
<span class="sourceLineNo">084</span> ByteArrayOutputStream byteArray = new ByteArrayOutputStream();<a name="line.84"></a>
<span class="sourceLineNo">085</span> copyStream(in, byteArray);<a name="line.85"></a>
<span class="sourceLineNo">086</span> return byteArray.toByteArray();<a name="line.86"></a>
<span class="sourceLineNo">087</span> }<a name="line.87"></a>
<span class="sourceLineNo">088</span><a name="line.88"></a>
<span class="sourceLineNo">089</span> /**<a name="line.89"></a>
<span class="sourceLineNo">090</span> * Moves a file from one location to other.<a name="line.90"></a>
<span class="sourceLineNo">091</span> *<a name="line.91"></a>
<span class="sourceLineNo">092</span> * @throws IOException If IO exception occur during moving.<a name="line.92"></a>
<span class="sourceLineNo">093</span> * @throws NullPointerException If either passed file is null.<a name="line.93"></a>
<span class="sourceLineNo">094</span> */<a name="line.94"></a>
<span class="sourceLineNo">095</span> public static void moveFile(File sourceFile, File destinationFile)<a name="line.95"></a>
<span class="sourceLineNo">096</span> throws IOException<a name="line.96"></a>
<span class="sourceLineNo">097</span> {<a name="line.97"></a>
<span class="sourceLineNo">098</span> if (destinationFile.exists())<a name="line.98"></a>
<span class="sourceLineNo">099</span> {<a name="line.99"></a>
<span class="sourceLineNo">100</span> destinationFile.delete();<a name="line.100"></a>
<span class="sourceLineNo">101</span> }<a name="line.101"></a>
<span class="sourceLineNo">102</span><a name="line.102"></a>
<span class="sourceLineNo">103</span> // Move file using File method if possible<a name="line.103"></a>
<span class="sourceLineNo">104</span> boolean succesfulMove = sourceFile.renameTo(destinationFile);<a name="line.104"></a>
<span class="sourceLineNo">105</span> if (succesfulMove)<a name="line.105"></a>
<span class="sourceLineNo">106</span> return;<a name="line.106"></a>
<span class="sourceLineNo">107</span><a name="line.107"></a>
<span class="sourceLineNo">108</span> // Copy file from source to destination<a name="line.108"></a>
<span class="sourceLineNo">109</span> InputStream in = null;<a name="line.109"></a>
<span class="sourceLineNo">110</span> OutputStream out = null;<a name="line.110"></a>
<span class="sourceLineNo">111</span> try<a name="line.111"></a>
<span class="sourceLineNo">112</span> {<a name="line.112"></a>
<span class="sourceLineNo">113</span> in = new FileInputStream(sourceFile);<a name="line.113"></a>
<span class="sourceLineNo">114</span> out = new FileOutputStream(destinationFile);<a name="line.114"></a>
<span class="sourceLineNo">115</span> copyStream(in, out);<a name="line.115"></a>
<span class="sourceLineNo">116</span> }<a name="line.116"></a>
<span class="sourceLineNo">117</span> finally<a name="line.117"></a>
<span class="sourceLineNo">118</span> {<a name="line.118"></a>
<span class="sourceLineNo">119</span> in = closeInputStream(in);<a name="line.119"></a>
<span class="sourceLineNo">120</span> out = closeOutputStream(out);<a name="line.120"></a>
<span class="sourceLineNo">121</span> }<a name="line.121"></a>
<span class="sourceLineNo">122</span><a name="line.122"></a>
<span class="sourceLineNo">123</span> // Remove source file<a name="line.123"></a>
<span class="sourceLineNo">124</span> sourceFile.delete();<a name="line.124"></a>
<span class="sourceLineNo">125</span> }<a name="line.125"></a>
<span class="sourceLineNo">126</span><a name="line.126"></a>
<span class="sourceLineNo">127</span> /**<a name="line.127"></a>
<span class="sourceLineNo">128</span> * Closes an input stream.<a name="line.128"></a>
<span class="sourceLineNo">129</span> * <a name="line.129"></a>
<span class="sourceLineNo">130</span> * @param in The stream to close.<a name="line.130"></a>
<span class="sourceLineNo">131</span> * @return null unless an exception was thrown while closing, else<a name="line.131"></a>
<span class="sourceLineNo">132</span> * returns the stream<a name="line.132"></a>
<span class="sourceLineNo">133</span> */<a name="line.133"></a>
<span class="sourceLineNo">134</span> public static InputStream closeInputStream(InputStream in)<a name="line.134"></a>
<span class="sourceLineNo">135</span> {<a name="line.135"></a>
<span class="sourceLineNo">136</span> if (in != null)<a name="line.136"></a>
<span class="sourceLineNo">137</span> {<a name="line.137"></a>
<span class="sourceLineNo">138</span> try<a name="line.138"></a>
<span class="sourceLineNo">139</span> {<a name="line.139"></a>
<span class="sourceLineNo">140</span> in.close();<a name="line.140"></a>
<span class="sourceLineNo">141</span> in = null;<a name="line.141"></a>
<span class="sourceLineNo">142</span> }<a name="line.142"></a>
<span class="sourceLineNo">143</span> catch (IOException e)<a name="line.143"></a>
<span class="sourceLineNo">144</span> {<a name="line.144"></a>
<span class="sourceLineNo">145</span> System.err.println("Cobertura: Error closing input stream.");<a name="line.145"></a>
<span class="sourceLineNo">146</span> e.printStackTrace();<a name="line.146"></a>
<span class="sourceLineNo">147</span> }<a name="line.147"></a>
<span class="sourceLineNo">148</span> }<a name="line.148"></a>
<span class="sourceLineNo">149</span> return in;<a name="line.149"></a>
<span class="sourceLineNo">150</span> }<a name="line.150"></a>
<span class="sourceLineNo">151</span><a name="line.151"></a>
<span class="sourceLineNo">152</span> /**<a name="line.152"></a>
<span class="sourceLineNo">153</span> * Closes an output stream.<a name="line.153"></a>
<span class="sourceLineNo">154</span> * <a name="line.154"></a>
<span class="sourceLineNo">155</span> * @param out The stream to close.<a name="line.155"></a>
<span class="sourceLineNo">156</span> * @return null unless an exception was thrown while closing, else<a name="line.156"></a>
<span class="sourceLineNo">157</span> * returns the stream.<a name="line.157"></a>
<span class="sourceLineNo">158</span> */<a name="line.158"></a>
<span class="sourceLineNo">159</span> public static OutputStream closeOutputStream(OutputStream out)<a name="line.159"></a>
<span class="sourceLineNo">160</span> {<a name="line.160"></a>
<span class="sourceLineNo">161</span> if (out != null)<a name="line.161"></a>
<span class="sourceLineNo">162</span> {<a name="line.162"></a>
<span class="sourceLineNo">163</span> try<a name="line.163"></a>
<span class="sourceLineNo">164</span> {<a name="line.164"></a>
<span class="sourceLineNo">165</span> out.close();<a name="line.165"></a>
<span class="sourceLineNo">166</span> out = null;<a name="line.166"></a>
<span class="sourceLineNo">167</span> }<a name="line.167"></a>
<span class="sourceLineNo">168</span> catch (IOException e)<a name="line.168"></a>
<span class="sourceLineNo">169</span> {<a name="line.169"></a>
<span class="sourceLineNo">170</span> System.err.println("Cobertura: Error closing output stream.");<a name="line.170"></a>
<span class="sourceLineNo">171</span> e.printStackTrace();<a name="line.171"></a>
<span class="sourceLineNo">172</span> }<a name="line.172"></a>
<span class="sourceLineNo">173</span> }<a name="line.173"></a>
<span class="sourceLineNo">174</span> return out;<a name="line.174"></a>
<span class="sourceLineNo">175</span> }<a name="line.175"></a>
<span class="sourceLineNo">176</span><a name="line.176"></a>
<span class="sourceLineNo">177</span> public static PrintWriter getPrintWriter(File file) throws UnsupportedEncodingException, FileNotFoundException<a name="line.177"></a>
<span class="sourceLineNo">178</span> {<a name="line.178"></a>
<span class="sourceLineNo">179</span> Writer osWriter = new BufferedWriter (new OutputStreamWriter(new FileOutputStream(file), "UTF-8"), 16384);<a name="line.179"></a>
<span class="sourceLineNo">180</span> PrintWriter pw = new PrintWriter(osWriter, false);<a name="line.180"></a>
<span class="sourceLineNo">181</span> return pw;<a name="line.181"></a>
<span class="sourceLineNo">182</span> }<a name="line.182"></a>
<span class="sourceLineNo">183</span> <a name="line.183"></a>
<span class="sourceLineNo">184</span>}<a name="line.184"></a>
</pre>
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